USB hub



FIG. 1 is a front perspective view of a USB hub;

FIG. 2 is a side perspective view of a USB hub;

FIG. 3 is a rear perspective view of the USB hub;

FIG. 4 is a bottom perspective view of the USB hub;

FIG. 5 is a front view of the USB hub;

FIG. 6 is a rear view of the USB hub;

FIG. 7 is a top plan view of the USB hub;

FIG. 8 is a bottom plan view of the USB hub;

FIG. 9 is a right side view of the USB hub; and,

FIG. 10 is a left side view of the USB hub.

The broken lines shown in the drawings represent portions of the USB hubthat form no part of the claimed design.

The ornamental design for a USB hub, as shown and described.